* {
    margin: 0;
    padding: 0;
}

ul {
    list-style: none;
    display: flex;
    position: fixed;
    bottom: 0;
    left: 0;
    height: 50px;
    line-height: 50px;
    width: 100%;
    font-size: 20px;
    font-weight: bold;
    background-color: white;
}

ul li {
    width: 33.33%;
    text-align: center;
}

.activeaa {
    color: red;
}

.active {
    font-size: 40px;
}

.hiddent {
    display: none;
}

dl {
    height: 50px;
    border-bottom: 1px solid gray;
}

dl dt {
    font-size: 20px;
}

dl dd {
    font-size: 14px;
    color: gray;
}

input {
    width: 99%;
    height: 50px;
    line-height: 50px;
    font-size: 30px;
}
